JP2599972Y2 - Internal cooling structure of recording device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical disk drive used as an external recording device such as a personal computer or a word processor, and an internal cooling structure of an auxiliary recording device using an FDD or an HDD.

[0002]

2. Description of the Related Art It is known that the characteristics of recording devices such as magneto-optical disk devices and magneto-optical disks are degraded by heat or dust. In a device such as a magneto-optical disk device in which a circuit with a high degree of concentration is mounted on a board, a large amount of heat is generated during operation. , And at the same time prevent the recording characteristics of the disc from deteriorating. In general, a fan is used to introduce outside air from the outside of the device. A method of installing a fan near the intake hole, introducing outside air by the fan, and discharging the air taken in from the exhaust hole provided in the housing of the device. Had been taken. At this time, an air filter (hereinafter referred to as a filter) is provided in the vicinity of the fan to prevent dust or dust from entering simultaneously with the outside air.

FIG. 5 is a plan view schematically showing a conventional apparatus. Reference numeral 1 denotes a disk drive device which can write and read data on and from a magneto-optical disk in this embodiment. A substrate (not particularly shown) having a controller and the like is attached to an upper portion thereof, and is a portion to which cooling air is to be sent. Various circuits for driving, controlling, recording / reproducing, etc. of each unit are mounted on the substrate, and generate heat as the operation proceeds. Reference numeral 15 denotes a fan, which includes a motor, a rotating shaft, and the like, which are not shown in detail. 13 is a power supply.

In the disk drive 1, when the power is turned on, the fan 15 mounted near the intake hole starts operating. The outside air taken into the apparatus from the air inlet 17 provided in the housing by the operation of the fan 15 flows through the housing while preventing dust contained in the outside air from entering by the filter 14, and accompanying the driving of the apparatus. The generated heat is exhausted out of the device through the exhaust holes while sucking out the heat.

However, according to this method, the filter gradually becomes clogged as it is used, and resistance to the introduction of outside air into the device arises, resulting in a shortage of the supply of cooling air into the device. There was a point.

For this reason, in order to secure a sufficient air volume for cooling the apparatus, for example, a method of enlarging the outer shape of the fan or increasing the rotation speed of the fan motor has been considered. However, increasing the size of the fan leads to an increase in the size of the entire apparatus and a rise in manufacturing costs. In addition, when the rotation speed of the fan motor is increased, the drive noise becomes larger than that of the fan motor having a lower rotation speed, which deteriorates the use environment for the consumer.
In addition, fans have been developed that can generate a large amount of wind by applying a mechanical design even in a small size, but this still has a problem in terms of manufacturing cost.

[0007] These disadvantages are caused in part by the fact that the fan is installed at a position distant from the object to be cooled. The outside air taken in by the fan then diffuses and flows to the other side, so that all the outside air taken in to cool the portion to which the cooling air is to be sent cannot be used, resulting in poor cooling efficiency.

As a solution to this problem, the applicant attempted to mount the fan near the object to be cooled, but outside air entered through a small opening provided in the housing as needed, and some of the outside air was removed. Since the dust is introduced into the apparatus without passing through the filter, dust and dirt contained in the outside air also enter, causing a problem in dustproof performance.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus which is simple and inexpensive and has high cooling performance and dustproof performance.

[0010]

Therefore, the present invention is achieved by arranging at least one fan for introducing outside air at least at two locations near the intake port and near the object to be cooled.

[0011]

Since the outside air sucked by the fan provided in the vicinity of the intake hole is collected again by the fan provided in the vicinity of the object to be cooled and blown to the object to be cooled, the cooling effect is high and the cooling effect can be sufficiently provided even with a small amount of outside air. . Further, since outside air is introduced through the filter, no dust or dust enters the device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a magneto-optical disk drive will be described below with reference to FIG. The same reference numerals are given to the same members as those of the conventional example described above to facilitate understanding.

In FIG. 1, reference numeral 1 denotes a disk drive device, which in this embodiment can write and read data on a magneto-optical disk. A substrate having a controller and the like is mounted on the upper part, and is a part that dislikes heat and temperature rise, and is a part to which cooling air is to be sent. Reference numeral 11 denotes a main body of the disk drive unit, which includes a substrate on which various circuits for driving, controlling, recording, and reproducing each unit are mounted. In this embodiment, writing and reading can be performed on the magneto-optical disk. Reference numeral 12 denotes a housing having an intake port 17 and an exhaust port 18. 13 is a power supply. Numeral 14 denotes a dustproof filter which is attached to the outside of the air intake hole attached to the housing, and which can be attached or detached according to the degree of dirt. Reference numerals 15 and 16 denote fans, which may have a known configuration, and include a housing, a motor, a rotating shaft, and wings (not shown in detail). The fan 15 is provided near the wall surface of the device 1. And faces the outside via the filter 14. The fan 16 is arranged inside the device so as to be near the object to be cooled. The apparatus using the embodiment of the present invention is configured as described above.

The operation of the embodiment of the present invention will be described below. When power is supplied to the disk drive device 1,
An operation confirmation sign is displayed on the outer surface of the disk drive device 1 for the user, and at the same time, the fans 15 and 16 start operating. Further, the disc drive cartridge is mounted on the disc drive unit 11 from the outside of the disc drive device 1 through the insertion slot by the operator.
The disk drive cartridge is provided with a shutter. When the disk drive cartridge is mounted, the recording opening is opened so that the disk surface faces the recording head, and when the disk drive is ejected, the opening is closed again. The mounted disk drive cartridge is simultaneously rotatable by being attached or magnetically attracted to the spindle motor in the disk drive unit 11. When the disk drive 1 is powered on, the power supply 13
A coil or the like included for performing the C voltage conversion heats up. At the same time, when various circuits mounted on the substrate are energized and start functioning, they begin to generate heat in the same manner as the coil. At the time of recording and reproduction, an electromagnetic actuator such as a step motor and a linear voice coil motor is operated to perform a predetermined tracking operation of the recording head, and since the recording is magneto-optical recording, power is supplied to a coil for generating a predetermined bias magnetic field. Even in the case of a device using a permanent magnet, an electromagnetic actuator or the like for driving the device operates as required, but all of them become heat sources.

The fan 15 introduces outside air through the air inlet of the device 1 and the filter 14. Subsequently, the fan 16 which is a heat generation source and is arranged near the target portion requiring cooling collects the outside air introduced by the fan 15 again, and sends the air toward the target portion. With this configuration, exchange of introduced outside air passing through the upper portion of the drive unit 11 with heat generated from the substrate is performed.

FIGS. 2 and 3 show a second embodiment of the present invention, in which a fan near the substrate is mounted at a slight angle. For example, for the sake of design, for example, when cables and the like are arranged between the fan and the board,
This becomes an obstacle, and there is a possibility that the cooling air may be blocked by these to make it impossible to exert a sufficient cooling effect.

By applying this embodiment to the apparatus, a sufficient cooling effect can be achieved even when an obstacle to the flow of air, such as a cable, is provided. Needless to say, the arrangement angle needs to be changed so that an efficient numerical value is appropriately set.

FIG. 4 shows a third embodiment of the present invention, in which a duct is attached so as to cover the upper side of the fan and the side opposite to the housing. Since this duct only changes the flow path of air, it may be a simple one made by bending resin or the like. In addition, as long as the air guide material guides the flow by changing the flow path of the duct and the air, the material to be used may be appropriately changed or the outer shape may be cylindrical or plate-like.

For example, when an obstacle such as a cable is arranged between the fan and the board depending on the design of the apparatus,
Alternatively, there may be a case where a specific component or area on the substrate has a range (part) that particularly requires cooling, and the cooling effect may not be improved as desired in such a case. This is because the fan is designed to send wind to the entire structure. According to the present embodiment, the cooling air from the fan can be directly applied to the substrate that generates a large amount of heat via the duct, so that the required area on the substrate can be cooled more effectively and efficiently.

[0020]

According to the present invention, a dramatic improvement in the cooling performance of the apparatus is recognized. It is inexpensive because it has a simpler configuration,
Also, since the number of revolutions can be kept relatively low, a low-noise apparatus can be realized. In addition, since the introduction of the outside air by the fan is performed efficiently, the outside air is sufficiently introduced into the apparatus even if resistance of the flow of the outside air occurs due to contamination of the filter.
The frequency of filter replacement for suppressing the resistance can be reduced.
As a result, the inside of the device is kept at an appropriate temperature, and no dust or dirt enters the device, so that the original writing and reading functions of the disk drive device are not deteriorated.

[0021]

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a plan view showing a third embodiment of the present invention.

FIG. 5 is a plan view showing a schematic arrangement in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk drive device 11 Disk drive unit 12 Case 13 Power supply 14 Dustproof filter 15 Fan 16 Fan 17 Intake hole 18 Exhaust hole 19 Cable 20 Duct

Claims (1)

(57) [Scope of request for utility model registration] 1. A recording apparatus having an air intake hole, a housing for accommodating a recording / reproducing drive, an air filter for preventing dust from entering the drive, and an air intake, comprising: A first motor fan arranged at an intake and taking air from outside for cooling the inside of the housing into the housing; and a first motor fan arranged near the medium to be cooled and taken in to cool the inside of the housing. A second motor fan that further takes in the air sent from the motor fan and blows the air toward the medium to be cooled.